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A Stereodivergent Strategy for Total Syntheses of Antirhine Alkaloids

Authors
Park, EunjoonBae, CheolwooCho, Cheon-GyuCheon, Cheol-Hong
Issue Date
19-Mar-2021
Publisher
AMER CHEMICAL SOC
Citation
JOURNAL OF ORGANIC CHEMISTRY, v.86, no.6, pp.4497 - 4511
Indexed
SCIE
SCOPUS
Journal Title
JOURNAL OF ORGANIC CHEMISTRY
Volume
86
Number
6
Start Page
4497
End Page
4511
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/49348
DOI
10.1021/acs.joc.0c02936
ISSN
0022-3263
Abstract
Total syntheses of the antirhine alkaloids are described. The cyanide-catalyzed imino-Stetter reaction of the aldimine derived from ethyl 2-aminocinnamate and 4-bromopyridine-2-carboxaldehyde provided a 2-pyridinyl substituted indole-3-acetate, which was further converted into the corresponding indoloquinolizidinium intermediate through C-ring formation. Subsequent trans-selective installation of the homoallylic alcohol side-chain at C-15 in the resulting indoloquinolizidinium allowed the total syntheses of antirhine and its known epimer.
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